Robert F. Kennedy Jr., the new U.S. health secretary, has promised to address an epidemic of chronic illness with President Donald Trump's backing, but his broad agenda from making food healthier to studying vaccines may clash with government spending cuts. Trump on Thursday ordered the creation of a 'Make America Healthy Again' Commission made up of Kennedy and other secretaries to look at everything from the high rates of autism and asthma in children to how much medicine is being prescribed to them for ADHD or other conditions. He also asked for health insurance coverage expansion and a report in...